Why does hot air blower handle overheat when there's still air overflow in the heating core ?

 

1. The heat core produces more heat than the air can remove.
2. Maybe there is slight electric leakage.What kind of material is the handle?

 

1. The heater core produces more heat than the air can remove.
2. Maybe there is slight electric leakage. What kind of material is the handle?

SMD rework station handles or hot air handlers that contains the brushless fan and heating core